Flora of North America species comparison

suffrutescent basally, erect, 50–150 cm, glabrous.

erect, 70–250 cm, strigose.

unifoliolate;

stipules ovate to ovate-lanceolate, not decurrent on stem, 4–7 mm;

blade obovate to elliptic, 50–150 mm, length 1.5–2.5 times width, surfaces glaucous, strigose abaxially, glabrous-punctate adaxially.

3-foliolate;

stipules absent;

leaflet blades linear to linear-lanceolate or elliptic-lanceolate, 50–130(–180) mm, length 7–10 times width, surfaces strigose abaxially, glabrous adaxially.

12–22-flowered, terminal, subterminal, or lateral, 10–50 cm;

bracts persistent, cordate-auriculate, 5–8 mm.

4–12-flowered, terminal or subterminal, 15–40 cm;

bracts persistent, linear-triangular, minute.

calyx broadly cylindrical, 10–15 mm, lobes triangular-lanceolate, glabrous;

corolla bright yellow, faintly red-lined, 17–25 mm.

calyx broadly cylindrical, truncate basally, 4–6 mm, lobes triangular, shiny-glabrous;

corolla pale yellow with prominent reddish purple lines, 18–20 mm.

30–45 × 10–20 mm, glabrous.

straight, (40–)50–70 × (10–)15–20 mm, sparsely strigose or glabrescent.

= 16.

= 16.